# D Minder Pro vs HeartMath

The clearest difference is rating: HeartMath at 4.9 against D Minder Pro's 4.0. HeartMath also leads on review sentiment (73% vs 34%) and ads (none vs shown). D Minder Pro's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (17.0 vs 26.0). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. D Minder Pro sells 2 one-off in-app purchases and HeartMath sells 4 in-app purchases, starting at $39.00 per year. Whichever you choose, the download price is not the number that matters.

HeartMath holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 1.8K and 4.6K respectively. Written reviews point the same way: 34% of D Minder Pro's written reviews are positive against 73% of HeartMath's.

D Minder Pro ships an update every 2 days, HeartMath every 3 weeks. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | D Minder Pro | HeartMath |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1.8K ratings)](https://appshunter.io/ios/app/d-minder-pro/id547102495/reviews) | **[4.9 (4.6K ratings)](https://appshunter.io/ios/app/heartmath/id6446414998/reviews)** |
| Number of ratings | 1.8K | **4.6K** |
| Positive reviews | 33.8% of reviews | **73.1% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Freemium | Freemium |
| Size | 37 MB | 185 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [ontometrics](https://appshunter.io/developer/410064693) | [HeartMath Inc.](https://appshunter.io/developer/482739914) |

## What reviewers say

### D Minder Pro

[App page](https://appshunter.io/ios/app/d-minder-pro/id547102495)

Track and manage your Vitamin D intake and sun exposure. This app calculates optimal sun exposure times based on your profile and location, and integrates with Apple Health for seamless data exchange. It also provides forecasts and notifications for vitamin D generation opportunities.

**Highlights:** Vitamin D tracking and management, Apple Health integration, Sun exposure calculation, Optimal exposure time alerts, Daily forecasts and solar position, History and future event scheduling

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DMinder Premium | $1.99 | one-time |
| Lifetime Ad Removal | $24.99 | one-time |

**What reviewers like**

- 🚀 Useful for tracking vitamin D levels
- 🌞 Helps with safe sun exposure
- 👍 Accurate calculations
- 🔋 Doesn't drain battery
- 💡 Innovative concept

**What reviewers complain about**

- 🐛 Crashes or bugs
- 🔍 Difficult to use or navigate
- 🔧 Lacks customization options
- 📊 Inaccurate data or estimates
- 💸 Paid version not worth the cost

**Reported bugs**

- App crashes on launch or during use
- Location settings not working properly
- Inconsistent data or calculations between devices
- Inability to save or sync user data
- Overcast detection not functioning correctly

**Requested features**

- Add more food options for vitamin D
- Ability to edit past sun sessions
- Provide more detailed reports and analytics
- Add reminders or notifications for sun exposure
- Allow customization of skin type and location


### HeartMath

[App page](https://appshunter.io/ios/app/heartmath/id6446414998)

This app helps you manage stress, improve focus, and achieve optimal performance by aligning your heart, mind, and emotions. It offers guided sessions, immersive journeys, and coherence practices based on over 30 years of research.

**Highlights:** Real-time HRV Coherence Measurement, Coherence Training, Scientifically Validated Techniques, Guided Learning Sessions, Progress Tracking, Heart-Brain Coherence Benefits

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HeartMath Premium | $39.00 | per year |
| HeartMath Premium | $59.00 | per year |
| HeartMath Premium | $79.00 | per year |
| HeartMath Premium | $99.99 | per year |

**What reviewers like**

- 🚀 Huge improvement over previous app
- 👍 Easy to use and highly recommended
- 💡 Loaded with HeartMath techniques and courses
- 👍 Powerful tool for nervous system balance and anxiety reduction
- 👍 Helps achieve a better mental state

**What reviewers complain about**

- 🐛 Connectivity issues with sensor
- 🐛 Sensor not compatible with older devices
- 🐛 App crashes and freezes on newer devices
- 🐛 Inaccurate heart rate and coherence readings
- 🐛 Disruptive screen sleep behavior during sessions

**Reported bugs**

- Sensor connection issues on newer devices
- App crashes and freezes on iPhone 16 Pro
- Inaccurate heart rate and coherence readings
- Screen sleep behavior disrupting sessions

**Requested features**

- Add dark mode option
- Allow playing music/sounds during sessions
- Provide audio feedback on coherence levels
- Add session history customization and details
- Improve sensor compatibility with older devices


## Frequently asked questions

### Is D Minder Pro free?

D Minder Pro is free to download, with in-app purchases available.

### Is HeartMath free?

HeartMath is free to download, with in-app purchases available.

### Which has better reviews, D Minder Pro or HeartMath?

HeartMath is rated higher. D Minder Pro averages 4.0 out of 5 from 1.8K ratings, while HeartMath averages 4.9 from 4.6K ratings.

### Do D Minder Pro or HeartMath have ads?

D Minder Pro shows ads; HeartMath does not.

### Which is updated more often, D Minder Pro or HeartMath?

D Minder Pro ships an update every 2 days, and HeartMath every 3 weeks. Most recently, D Minder Pro was updated on September 23, 2026 and HeartMath on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*